#pragma GCC optimize(2)
#include <bits/stdc++.h>

using namespace std;
#define int long long
const int inf = 0x3f3f3f3f3f3f3f3f;

void solve()
{
	int n;
	cin >> n;
	vector<int> a(n);
	for (int i = 0; i < n; i += 2) a[i] = -1;
	for (int i = 1; i < n; i += 2) a[i] = 3;
	if (n % 2 == 0) a[n - 1] = 2;
	for (int i = 0; i < n; i++) cout << a[i] << ' ';
	cout << endl;
}

signed main()
{
	ios_base::sync_with_stdio(false);
	cin.tie(0);
	cout.tie(0);
	int _ = 1;
	cin >> _;
	while (_--)
	{
		solve();
	}
	return 0;
}